1.  reviewer(n = noun.person) reader, referee - someone who reads manuscripts and judges their suitability for publication;
is a kind of critic
has particulars: scanner
Derived form verb review₂

2.  reviewer(n = noun.person) commentator - a writer who reports and analyzes events of the day;
is a kind of author, writer
Derived form verb review₁

   One who reviews or reëxamines; an inspector; one who examines publications critically, and publishes his opinion upon their merits; a professional critic of books. [1913 Webster]

N  judgment, result, conclusion, upshot, deduction, inference, ergotism, illation, corollary, porism, moral, estimation, valuation, appreciation, judication, dijudication, adjudication, arbitrament, arbitrement, arbitration, assessment, ponderation, valorization, award, estimate, review, criticism, critique, notice, report, decision, determination, judgment, finding, verdict, sentence, decree, findings of fact, findings of law, res judicata, plebiscite, voice, casting vote, vote, opinion, good judgment, judge, umpire, arbiter, arbitrator, asessor, referee, censor, reviewer, critic, connoisseur, commentator, inspector, inspecting officer, twenty-twenty hindsight, armchair general, monday morning quarterback, judging, judicious, determinate, conclusive, on the whole, all things considered, a Daniel come to judgment, and stand a critic, hated yet caress'd, it is much easier to be critical than to be correc, la critique est aisee et l'art est difficile, nothing if not critical, O most lame and impotent conclusion.